Motion-picture-projecting machine



Aug. 7, 1923.

F, MLADlNICH MOTION PICTURE PROJECTING MACHINE 2 SheetS- -Sheet 1 Filed Sept. 5, 1920 Inventor Aug. 7, 1923. 1,464,327

F. MLADINICH MOTION PICTURE PROJECTING MACHINE Filed Sept. 3, 1920 2 Sheets-Sheet 2 ma 3gb J J6 J8 v a J- v HIYIIIIIIIIIIM z A- Patented Aug. 7, 1923.

UNITED STATES PATENT OFFICE.

I'm! KLADINICH, 01' NEW YORK, N. Y., ASSIGNOB TO H. & N. CABIBURETOB 00.,

INC A CORPORATION OF NEW YORK.-

KOTION-PICTUBE-PBOJECTING H ACHINE.

Application med September a, 1920. Serial No. 4014522.

To all whom may concern:

Be it known that 1, Fauna MLADINICH, a citizen of Serbia, residing in'the borough of the Bronx, county of Bronx, city and State 8 of New York, have invented a certain new and useful Motion-Picture-Proj'ecting Machine, of which the following is a specification.

My invention relates to devices for projecting images rinted upon an'elongated tape-like film o as, celluloid, and more particularly to an apparatus for feedin across a beam of light a photographic filmli perforations along one side edge thereof. Such a film is illustrated in my copending application for a motion picture camera, filed on or about the 19th day of April,

1920, and numbered serially 37 4,965.

The objects of my invention are to provide a device of the character described, having but few parts, easy to operate, not likely to get out 0 order, easy of re air, in which all ofthe movin parts will be readily accesi sible and in w 'ch all of the operating parts will be visible.

A further object of the invention is the reduction of a device, of the character herein described, which is extremely simple in construction, neat and attractive in appearance, thoroughly reliable and eflicient in its u and economical to manufacture.

ith these and other objects in view to be more fully set forth hereinafter, the invention consists in the "novel construction, combination of elements, and arrangement 0 parts which will be exemplified in the construction hereinafter described in the speci' fication and illustrated in the accompanying drawin considered together or separately. The Inventive idea involved is capable of receiving a variety of mechanical sions, one of which for the pur of 1llustrating the invention, is shown in the accompanying drawings.

The invention will be first described in connection with the accompanying drawings, wherein similar reference. characters are used to designate corresponding parts W throu bout the several views, and then more spec cally defined and indicated in the appended claims.

. Fig-1 is a side elevation of a prqectmg machine made in accordance ,with my invention.

transparent material such avinga single row of I alignment OXPIGS- Fig. 2 is a front elevation of the same partly in section. a

Fig. 3 is a detail front elevation of the shutter operating devices, and

Fig. 4' is a section on the line 4-4 of Fig. 3.

The device comprises a base 1 adapted to be carried on a suitable standard. Carried on the base is a housing 2 open at one side. Within the housing is mounted a supply reel 3 and a take-up reel 4 of the usual construction, each ada ted to receive a spool on which a film 5 is carried. A guide roller 6 is carried on the back of the housing.

Mounted on the top of the housing, at a point over the supply reel, is a skeleton frame comprising-a base plate '7, a vertical front plate 8 and a rearwardly extending web 9. The upper portion of the plate b the flywheel, three in number, form the vanes of a shutter.

Carried on the web 9' to one side of the shaft 13 is a tubular member 16 in axial with .an opening 17 in a plate 18 carried by the web at a point distant from the housing 10, Within the member 16 is located the usual objective forming the projecf tor. Hinged to the plate 18 is the usual door 19 provided with an opening in alignment with the member 16 and the opening 17, and a source of illumination 20 is carried on the door 19 whereby the beam of light from the source will pass through the openi in the door 19, plate'18, member 16, an the spaces between the spokes 15 a of the fly wheel 14 when such spaces are in alignment with said openings. A recess 21 is provided between the door 19 and the lamp 20 whereby a slide of colored lass may be inserted in the path of the light am.

Mounted on the shaft 13 is a bevel gear 22 which is in mesh with a similar gear 23 on a short shaft 24, which in turn carries a s ur pinion wit a spur gear 26 on a shaft 27 which extends beyond the side of the housing 2 25. The pinion 25 meshesand carries an operating crank 28. The gear 26 meshes w1th a gear 29 on a shaft 30 on which is mounted a film feed roller 31 having a single row of feeding sprockets 32 adapted to engage the perforations 33 along one ed e of the film 5 and feed the latter from t e supply reel 3 and to the take-up reel 4. The film is led from the reel 3, under the guide roller 35.

Pivotally mounted on the web 9 is a pair of arms 34, one at each side of and below the shaft 30. On the pivot of each arm is a film guide roller 35, and a roller 36 is carried at the free extremity of each arm. The rollers 36 are recessed, as is common, whereby when the rollers are in engagement with the roller 31, with which they are adapted to engage, the sprockets 32 will be within the recesses. The shaft 30 carries a pulley 37, and belt 38 is led over the same and over a. pulley 39 on the shaft of the take-up reel 4. There is the usual slip connection between the pulley 39 and the take-up reel, whereby said reel will be automatically slowed up as the size of the roll of film thereon increases.

The film is led from the reel 3 upward along one side of the roller 31, and is held with the sprockets of the same in engagement with the perforations of the film by one of the rollers 36. The film is drawn off to one side of the member 16 and formed into a large loop extending above the member and above the plate 18. The film isnow led downward between the plate 18 and the floor 19, as is common, over the opposite side of the roller 31, under the guide roller 6 and to the take-up reel 4. The upper wall of the housing 2, and the base plate 7, are re cessed as at 14 for the passage of the film.

At the lower extremity of each arm 34 is a lug 41 disposed at an angle from the arm, and a leaf spring 42 secured to the base 7 at a point midway between the pivots of the arms, bears with its free ends against the lugs, and retains the rollers 36 in contact with the film,.and the latter in engagement with the roller 31.

The film feeding mechanism comprises a disc 43 mounted on the shaft 13, and said disc carries a wrist pin 45. A. spring arm 46 1s pivoted on a nut 47 carried on a screw 48 mounted in bearings 49 carried on the web 9. The arm is provided with a proecting plate 50, and a cam member 51, oth disposed in the path of the wrist pin 45.

' The free end of the arm 46 is slotted as at 52, and carried within the slot is the stem of a block53. The block is rectangular in shape and is adapted to slide vertically in a slot 54 in the plate 18 and in alignment with the openings 33 in the film. The block is provided with ratchet teeth 55', adapted to engage the openings in the film. A spring .ed, the crank is 56 is adapted to move the arm 46 upward,

and a stop 57 limits said upward movement.

The operation is as follows:

The film being threaded through the apparatus, as before described, and lamp lightrotated in the clock-wise direction. The roller 31 will feed the film upward from the supply reel 3, and the loop above the roller will be formed.

As the disc 43 is rotated, the wrist pin en gages the cam member 51, and moves the free end of the arm toward the film, and the teeth of the block 53 will engage the openings in the film. The continued rotation of the disc will engage the wrist pin with the member 50, and the arm, and the block with it will be moved downward feeding the film the proper distance across the light openings. This will form a loop in the film below the light openings, and the opposite side of the roller will continuously feed the film from this loop to the take-up reel 4 which is driven from the shaft of the roller 31.

IVhen it is desired to change the framing of the picture, the screw 48 is rotated by means of the milled head 58 and the arm 46 will be moved up or down as the case may be to properly place the projected picture on the screen.

The slot 54 will guide the block 55 in the vertical direction, and the slot 52 in the arm 46 will permit of such right line motion. When the wrist pin passes from contact with the member 50, the spring 56 will raise the arm 46 and the ratchet shape of the teeth 55 will cause them to be released from the openings in the film and to move the arm in the direction away from the film, and bring the cam member again in position to be engaged by the wrist pin.

' In accordance with the provisions of the patent statutes, I have described the principle of my invention together with the apparatus which I now consider to represent the best embodiment thereof, but I desire it understood that my invention is not confined to the particular form of apparatus herein shown and described, the same being merely illustrative, and that the invention can be carried out in other ways without departing from the spirit of my invention, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the \appended claims, and by means of which objects of my invention are attained, and the new results accomplished, as herein set forth, as it is obvious that the particular embodiment herein shown and described is only one of many that can be employed to attain these objects and accomplish these results.

Having now described my invention what I claim and desire to secure by Letters Patent is:

tor, said film being positione 1. A device of the character described, comprising a film having perforations along one edge only, a source of light, a projector, said film being positioned between the light and the rojector, a pivoted sprin her, an e ement carried by the mem r and adapted to engage the perforations in the film, common means for periodically engaging the member to cause the element to engage the perforations and for moving the member to advance the film relatively to the projector.

2.A device of the character described, comprising a film having perforations along one edge only, a source of li d between the light and the projector, an adjustable pivotedspring member, an element loosely carried by the member and adapted to engage the perforations in the film, means for intermittently engaging the member to cause the element to engage the perforations for intermittently moving the member to adv'zince the film relatively to the projector.

, 3. A device of the character described,

,comprising a perforated film, a source of light, a projector, a vertically movable nut,

means for moving the nut, a spring arm pivoted to the nut, there being a pair of cam surfaces on the arm, a member adapted to engage the cam surfaces in succession whereby the said arm will be moved first in one direction and then in a direction perpendicular to the first movement.

4. A device of the character described, comprising a perforated film, a source of light, a projector, a vertically movable nut, means for moving the nut, a spring arm pivoted to the nut, an element loosely carried by the arm for enga ing the perforations, there being a pair 0% cam surfaces on the arm,'a member adapted to engage the cam surfaces in succession, whereby the said arm will be moved first in one direction and then in a direction perpendicular to the first movement.

5. A device of the character described, comprising a perforated film, a source of light, a projector, a vertically movable nut,

I means for moving the nut, a spring arm pivoted to the nut, there being an open slot in the arm, an element resting in the slot, there being a tooth on the element for engagement with the perforations in the film,

' there being a pair of cam surfaces on the .arm, a member adapted to engage the cam surfaces in succession whereby the said arm will be moved first in one direction and then in a direction perpendicular to the first movement. v

6. A- device of the character described, comprising a source of light and a projector, a film disposed between the light and the projector, said film having a row of perforations along oneedge thereof only, a pivt, a projecoted lever, a cam on the lever, a pro'ection on the lever, a shaft, a disc on the s aft, 'a wrist pin on the disc, a block loosely carried by the free end of the lever, there being teeth on the block adapted to engage the perforations in the film, said block being normally out of contact with the film, a cam on the lever, a projection on the lever, and means for rotating the shaft whereby the wrist pin may engage the cam to move the block into engagement with the film and whereby the continued rotation will engage the wrist in with the projection to move the film relatively to the projector.

7 A device of the character described, comprising a source of light and a projector, a film disposed between the light and perforations in the film, said block being normally out of contact with the film, a cam on the lever, a projection on the lever, means for rotating the. shaft whereby the wrist pin may engage the cam to move the block into engagement with the film and whereby the continued rotation will engage the wrist pin with the projection to move the film relatively to the projector and means for pivotally moving the lever to the position to be engaged by the wrist pin.

8. A device of the character described, comprising a source of light and a projector, a film disposed between the'light and the projector, said film having a row of being teeth on the block-adapted to engage the perforations in the film, said block being normally out of contact with the film, a cam on the lever, a projection onthe lever,

means for rotating the shaft whereby the wristpin may engage the cam to move the block into engagement with the film and whereby the continued rotation will engage the wrist pin with the projection to move the film relatively to the projector and means for moving the pivot of the lever.

9; A device of the character described, comprising a source of light and a projector, a perforated filmdisposed between the light and the projectdr, a pivoted lever, a cam on the lever, a projection on the lever, a

disc, a block loosely carried by the free end of the lever, there being teeth on the block adapted-to engage the perforations in the film, saidblock being normally out of conshaft, a disc onthe shaft, a wristpin on the li iO tact with the film, and means for rotating the shaft whereby the wrist pin may engage the cam to move the block into engagement with the film and whereby the continued rotation will engage the wrist pin with the projection to move the film relatively to the projector. l

10. A device of the character described, comprising a source of light and a projector, a perforated'film disposed between the light and the projector, a pivoted lever, a cam on the lever, a projection on the lever, a shaft, a disc on the shaft, a wrist pin on the disc, at block loosely carried by the 'free end of the lever, there being teeth on the block adapted to engage the perforations in the film, said block being normally out of contact with the film, means for rotating the shaft whereby the wrist pin may engage the cam to move the block into engagement with the film and whereby the continued rotation will engage the wrist pin with the projection to move the film relatively to the projector and means for pivotally moving the lever to the position to be engaged by the wrist in.

11. A device of the character described, comprising a source of light and a projector, a perforated film disposed between the light and the projector, a pivoted lever, a cam on the lever, a projection on'the lever, ashaft,

a disc on the shaft, a wrist pin on the disc, 8. block loosely carried by the free end of the lever, there being teeth on the block adapted to'engage the perforations in the film, said block being normally out of contact with the film, means for rotating the shaft whereby the wrist in may engage the cam to move the bloc into engagement with the film and whereby the continued rotation will engage the wrist pin with the projection'to move the film relatively to the projector and means for moving the pivot of the lever.

12. A device of the character described, comprising a source of light, a projector, a film, a lever for intermittently movi the film across the field of the projector, a s laft, means carried by the shaft for giving said lever an oscillating movement in one direction and a further oscillating movement in a direction at an angle to the direction of the first mentioned movement, means for rotating the shaft, a fly wheel on the shaft, the axial line of the projector being parallel but eccentric to the shaft whereby the spokes of the fly wheel will act as shutters to intermittently close and disclose the projector opening.

This specification signed this 13th day of Aug, 1920.

FRANK MLADINICH. 

